Controlling-valve.



Patented Mar. 27, 1917.

2 SHEETS-SHEET l W. J. BURKE.

CONTROLLING VALVE.- APPLICATION FILED Novjao. 1914. LMS.,

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Patented Mar. 27, 1917.

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lldiehflllllihi@ tlldldltlm WILLIAM J. BURKE, 0F PTTSBURGH,FENNSYLVANIA, SSIGNGR T0 ELLICTT CGM- PANY, OF PITTSBURGH, PENNSYLVANA,CORPURATIGN OF PENNSYLVANIA.

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Specification of Letters Eatent.

Patentes irai. ev, miv.

Application led November 30, 1914. Serial No. 874,590.

To all whom t may concern.

Be it lrnown that l, WILLIAM J. BURKE, a citizen of the United Stat-es,residing at Pittsburgh, Allegheny county, Pennsylvania, have invented anew and useful Improvement in Controlling-Valves, of which the followingis a full, clear., and exact description, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure 1 is a vertical section of one form of valve embodying myinvention.

l Fig. 2 is an end elevation of the same, and

Fig. 3 is a sectional view, on a larger scale, of a portion of thedevice.

My invention has relation to controlling valves; and is designed toprovide a simple and cicient valve of this character which can be usedfor a variety of purposes for automatically controlling the flow offluid. ln the accompanying drawings l have illustrated my invention asembodied in a pump governor, but do not limit myself to such embodiment.

The nature of my invention will be best understood by reference to theaccompanying drawings, which will now be described, it being premised,however, that various changes can be made in the details of constructionand arrangement of the several parts without departing from the spiritand scope of my invention as defined in the appended claims.

ln these drawings the numeral 2 designates a valve casing or fittinghaving therein a valve 3 which is adapted to control the port 4, whichin turn controls the How through said casing or fitting. The valve has aguide at 5 and is shown as having the balancing portions 6 and 7, thebalancing portion 6 being located in a chamber 8 which communicates at 9with the flow passage through the fitting. 10 is 'the stem of the valvewhich extends upwardly through a stuffing boX 11 and has attachedthereto a cross bar 12 whose ends project out through the open orpartially open sides of a frame member 13. This frame member is shownIas supported on the fitting 2 and as having guides 14: for said crossbar.

15 designates a barrel or cylinder which is secured at its lower end inthe frame member 13, and which has at its upper end a cap or head 16secured therein. This cap or head 16 has a connection 17 leading to thepart to be controlled (in the present case to the discharge side of apump). 18 is a tube of rubber or other elastic material which is placedwithin the cylinder or barrel 15 with its upper end engaging a socket 19in the head or cap 16, and its lower end seating within a piston member20, which in turn is seated on the upper end of the valve stem 10. Thistube is open at both ends, its upper end communicating with the pipe 17through the port 20a. 21 designates a series of ring or sleeve memberswhich are seated within the barrel 15 and between said barrel and thetube 18. Each of these members is formed with a reduced portion 22 whichlits telescopically within a socket portion 23 of the adjacentmember.rllhe socket portion 23 of the upper member 21 telescopically engages adepending flange 211 of the head 16; and the reduced extension 22 ofthelower member 21 telescopically engages the socket portion 25 of thepiston member 20. Each of the members 21 is shown as having an annularrecess 26 in its inner face; and the telescoping portions of the membersare shown as having beveled surfaces forming the recesses 27. 28designate vent openings through the piston member 20, and 29Ais asimilar vent opening through the head 16.

30 designate tension springs which are connected at their lower ends tothe projecting ends of the cross bar 12 before referred to, and at theirupper ends to a cross bar 31 which rests in supports 32 on the head 16.33 is an adjusting screw engaging the cross bar31 and bearing againstthe head 16, and which provides means for adjusting the tension of thesprings.

The operation is as follows: The springs 30 act upon the valve throughthe cross bar 12 and stem 10 in a direction to unseat the This resultsin a longitudinal expansion or Y valve.

with the annular recesses 26 in the telescop- K, ing members 21 and alsointo engagement with the recesses 27 between adjacent members 21.Therefore, as the pressure within the tube acts to force the pistonmember 20 downwardly, the movement of said member will be transmittedthrough the elastic tube to the entire series of telescoping members.

.stretching of the tube, and also a telescoping movement of the entireseries of members 21, in the manner indicated in Fig. 3, thisVtelescoping movement being more or less equally distributed throughoutthe series. Y

YThe advantages of my improved controlling valve will be apparent tothose skilled y in the art, since it provides a very sensitive controlgreatly superior tov that of the usual diaphragm arrangements. It willbe readily seen that .the length of the barrel 15 and of the elastictube can be increased as may be desired to provide for a greater rangeof movement, and to an extent not Ypossible with the usual `diaphragmarrangements. The entire construction is a simple and compact one, andthe arrangement of the telescopingA members insures a distribution ofaction throughout the entire series and "throughout the length of-theelastic tube.

lIn the construction illustrated, the head 16 is shown as having anotheropening, closed by a plug- 311, opposite the connection 17. This,however, is not essential, but is provided in order that connection Vmaybe made with the device from either side, as may be most convenientinany particular case.

It will be understood that the form of the telescoping members may beconsiderably changed, that means other than those specically shown maybe provided to insure a gripping engagement between said members and theelastic tube, and that various other changes may be made within thescope of the claims. V

f VI claim: Y

1. A controlling device of the. character described, comprising a valve,a hollow eX-Y I pansible member arranged to act upon the valve, meansfor admitting pressure to the interior'of said member, and a series oftele-Vk scoping members -seated around said elastic i A member, saidtelescoping lmembers Vbeing have a gripping engagement with the same,substantially as described.

2. In a controlling device of the character described, the combinationwith a valve and spring means tending to move said valve in onedirection, of a hollow elastic member arranged to act upon the valve inthe opposite direction, a series of telescoping members seated aroundthe said elastic member, said telescoping members being free to movelongitudinally one upon another and arranged tov have a grippingengagement therewith, and means for admitting pressure to the interiorof the elastic member, substantially as described.

3. In a controlling device of the character described, the combinationwith a valve, of a piston member arranged to move the valve in onedirection1 an elastic tube seated against said piston member, means foradmitting pressure to the interior of the tube, and a series oftelescoping members seated around the tube and having portions adaptedto grip the same, said telescoping members being free to movelongitudinally one upon another, substantially as described.

4c.v In a controlling device of the character described, the combinationwith a valve, of a piston member arranged to move the valve in onedirection, an elastic tube seated n against said piston member, meansfor admitting pressure to the interior of the tube, and a series oftelescoping members seated around the tube and having portions adaptedto grip the same, one of the telescoping members having a telescopingengagement with the piston member, said telescoping members being freeto move longitudinally one upon another, substantially as described.

5. In a controlling device of the character described, the combinationwith a valve, a Vpiston member operatively connected to the valve, anelastic tube engaging the piston member, means for admitting pressure tothe interior of the tube, and a series of telescoping memberssurrounding said tube, said telescoping members having recessed innerfaces, substantially as described.

6. In a controlling device of the character described, the combinationwith a valve having a projecting stem, of a piston member seatingagainst one end of the stem, an elastic tube engaging the piston member,means for admitting pressure to the interior of said tube, a casingmember surrounding the tube, and a series of telescoping membersinterposed between the tube and the casing member, said telescopingmembers being free to move longitudinally with respect to each other,substantially as described.

7. A controlling device of the character described, comprising a valve,and a projecting stem, spring means tending to move the valve in onedirection, a piston member bearing against the valve stem, an elastictube engaging the piston member at one end and having a Xed abutment atits opposite end, and a series of teleseoping members surrounding saidtube and arranged to have a gripping engagement With the same, said myhand.

WILLIAM J. BURKE. Witnesses:

IDA L. SHERRER,

J. W. SHERRER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

